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1. List the four phases of a planned maintenance service call.
2. What is the purpose of checking the supply voltage both before and after operating the system?
3. Name key safety aspects of combustion appliances that should be checked on a planned maintenance service call.
An antenna having an input impedance on transmission of 70+j30 ohms is used on reception by connecting directly to a 50 ohms transmission line which is perfectly matched to a pure resistance load
an electrical transformer dissipates heat equivalent of 3000 kW/h. the inlet and outlet temperatures of the cooling water are 55C and 15C respectively. calculate the mass of the cooling water in a minute.
Obtain polar plot using nyquist command. determine the stability of closed loop system based on nyquist criterion. design a compensator to meet the P.O. = 10%. Plot the before and after plot on the same nyquist plot.
an adiabatic throttling process for R-134a takes saturated liquid at 800 kPa entering, and drops the pressure to 280 kPa (constant specific enthalpy). Determine the quality exiting and the specific entropy change for the throttling process.
Figure shows two CMOS inverters in cascade. - Circuit can be thought of as an uncoupled CMOS R/S flip flop.- calculate the value of vO1.
Describe the vertical chain for the production of motion pictures. Describe the extent of vertical integration of the steps in this chain.
Find and express ZEQ(s) as a rational function and locate its poles and zeroes.- Select values of R and C to locate a pole at s = -22 krad/s. Where is the resulting zero?
write a program to compute the power loss in a transmission line with a resistance of .05ohms/mile. compute the power loss if 500kw of power is transmitted from a power generating station to cities at distances of 20, 30, 40, 50,...100 miles at 10..
Determine the required weights of each solid ingredient and the number of gallons of water required for a 6.5-cy batch.
1) What is the difference between Vin and Vo in a voltage clipping circuit with a zener diode 2) Does Vzo of a zener depend on the temperature of the surrpunding 3) Why is it necessary to put a resistor in a voltage regulator cirucit with a zener di..
Can we build a bandpass filter using a low pass and a high pass filter combination. If your answer is yes, then how should the cut off frequencies be arranged. Illustrate your answer with a simple example.
An initially charged capacitance discharges through a resistance. At one time constant, what percentage of the initial voltage remains What percentage of the initial soted energy remains
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